Incandescent gas-burner.



(7.4. at W No. 688,697. Patnted Dec. l0, mm. H. w. ROYAL.

INGANDESCENT GAS BURNER.

(Application filed Apr. 26, 1801.)

(No Mgdel.)

WZLfiesses.

\ 'Jttarngy- I UNITED STATES HENRY W. ROYAL, OF BALTIMORE, MARYLAND,ASSIGNOR TO lVILLlAM B.

r BROWN, OF BALTIMORE, MARYLAND.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 688,697, dated December10, 1901- Application filed April 26, 1901.

tles are composed of extremely fragile mate rial, and a slightconcussion or shock given the gas-burner will often be imparted to themantle and cause it to break.

The object of this invention is to provide a sensitive antivibratorysupport for the mantle, which will protect the latter from the eflectsof concussions or shocks to which the lamp may be subjected.

The invention consists in certain constructions, arrangements, andcombinations of the parts hereinafter fully described and claimed,reference being had to the accompanying drawings, in which- Figure l isa side elevation of an incandescent lamp provided with my improvedantivibratory mantle-support, which latter is shown [partly in section.Fig. 2 is a detail side elevation of the float of the said antivibratorymantle-support. Fig. 3 is a bottom plan view of the same. Fig. 4 is adetail top plan view of the cup adapted to receive said Referring to thedrawings, the letter adesignatesaburner of the ordinary type, intendedto be secured to a gas-bracket. A stationary cup I) is provided with anupward-projecting central tubular socket c, which is fitted tightly overthe gas-tube d of said burner and is supported with its lower edgeresting on the shutter e of the latter. The central socket 0 forms anannular well f, which surrounds said sooketand is intended to receive asmall quantity of metallic mercury g, as indicated in Fig. 1. A tubularfloat h (shown in detail in Figs. 2 and 8) surrounds the gas-tube d andthe socket c of said cup I), and said float is provided at its lower endwith an outwardly-extending annular base 2', which rests upon and floatsin the mercury g in the said cup. The circular Serial No. 57,562. (Nomodel.)

inner wall j of said base is outwardly and downwardly beveled, as shownin Fig. 1, and at its upper small part Z fits snugly around the socket cand with just suflicient accuracy to permit a free up-and-down movementof the float and to permit only a very slight direct lateral movement ofthe same, and the lower and larger part m of said inner wall of the baseflares away from the socket 0, but surrounds it, all for a purposehereinafter described.

A jacketo is provided with the usual wiresieve cap 19 and is secured byany suitable means, such as the pin q and bayonet-slot r, to the tubularbody portion of the float h. The mantle suspension-rod sis attached tosaid jacket and extends above the same, and from the upper hooked endzfof said rod is suspended the incandescing mantle to, which preferablyextends with its lower end surrounding the said jacket.

One side of the base i of the float his made lighter than thediametrical opposite side to compensate for the weight of thesuspensi0nrod 8 upon the light side by cutting away the upper surface ofthe base i, as shown at 1;; but the invention is not confined to thatparticular construction, as other expedients to equalize the weight maybe used.

It is intended that the cup 19 shall also serve as the support or basefor the chimney-gallery, which latter, however, forms no part of thepresent invention and for this reason is not shown. 85

It is to be especially noted that as the inner wall j of the float-base2' is beveled, as before described, the mercury g will form anupwardly-tapering cushion between the upwardly-projecting portion of thecup-socket 9s 0 and the said float, and said cushion tapers to almostnothing at the upper edge lot said wall, so that the mercury cushionwill allow the float h to slightly oscillate, but will prevent shocks orconcussions upon the socket 5, from being imparted to the float. It isalso to be noted that by forming the base i with a beveled bottom wall mthe float may oscillate without the outer wall of its base coming incontact with the bottom of the cup.

By the construction and arrangement of parts hereinbefore described themantle is protected from the effects of any shocks or concussions towhich the burner may be subjected.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a lamp adapted to use an incandescent mantle, the combination of astationary cup provided with a well surrounding a gas-tube of the lamp;metallic mercury in said cup; and a tubular float in said cup andadapted to carry or support the mantle, said float being provided withan inclined inner wall surrounding the inner wall of said well, wherebythe mercury will form a tapering cushion between said two walls, as setforth.

2. In a lamp of the character described, the combination with a gas-tubeof the lamp, of a cup provided with a socket by which it may be insertedover said gas-tube, and also provided with. a well surrounding saidsocket; metallic mercury in said well; and a float in said mercuryadapted to carry or support the mantle, said float being provided withan annular outwardly-,exten din g base having an innor circular wallsurrounding said socket, and said inner wall being beveled downwardlyand outwardly from said socket, whereby the mercury forms anupwardly-taperin g cushion between said socket and wall.

3. In a lamp of the character described, the combination of a cup, I),provided with a Socket, 0, and well, f; and float, h, provided with anannular base, 2', adapted to float in said cup, and which base has abeveled inner wall, j, and a bottom wall, 1%, beveled upwardly from thelower edge of said inner wall, as set forth.

4. In alamp adapted to use an incandescin g mantle, the combination witha gas-tube of the lamp, of a cup provided with a socket fitting aroundsaid gas-tube and said cup also provided with a well surrounding saidsocket; metallic mercury in said well; and a tubular float in saidmercury adapted to support the mantle and having an opening whichreceives said socket, the wall of said opening and the exterior wall ofsaid socket being arranged with respect to each other so as to form atapering space between them,whereby the mercury will form a taperingcushion between said two walls.

5. In alamp adapted to use an incandescing' mantle, the combination witha gas-tube of the lamp, of a cup provided with asocket fitting aroundsaid gas-tube andalso provided with a well surrounding said socket;metallic mercury in said well; and a float-base in said mercuryearryingmeans to supportthemantle and having an opening which receivessaid socket, said float-base having a greater vertical thickness at thesocket-opening than atits outer edge, and said variation in thicknessbeing produced by the conformation of the bottom surface.

6. In a lamp adapted to use an incandescing mantle, the combination witha gas-tube of the lamp, of a cup provided with a socket fitting aroundsaid gas-tube and also provided with a well surrounding said socket;metallic mercury in said well; and a float in said mercury adapted tosupport the mantle and having an opening which receives said socket,said float having an inclined bottom surface whereby the same will havea greater depth in the mercury near the socket-opening than at the outeredge.

In testimony whereof I aflix my signature in the presence of twowitnesses.

. HENRY w. ROYAL. \Vitnesses:

F. S. STITT, CHARLES L. VIETSCH.

